Zhang Mao, the head of the Chinese State Administration for Industry and Commerce (SAIC) gave the presentation, and said that historically Microsoft has not been open about its business and motives.

"Information relating to Microsoft's suspected Windows and [Microsoft] Office software has not been fully open," he said.

In July Chinese authorities raided Microsoft's China offices, and we reported that financial statements and emails were taken and that high level staffers had been questioned. It later transpired that the Chinese effort related to an anti-monopoly investigation, which brings us back to where we are now, as have been before.